After the First World War, as members of the German minority in the former Prussian province of Posen [Poznan], the Bleicher family relocated first to Wuppertal-Elberfeld, and later, in the early 1920s, to Dortmund.

In 1921, Berta was the first of the family, to move to Dortmund, initially to Hohensyburger Str. 11. She was a sales assistant, and then a manager. In May of the same year, she went to live at Taubenstr. 2, where the other members of the family gradually joined her. Her father Markus Bleicher (born 26.4.1842) came in January 1922 from Elberfeld, followed by daughters Jenny and Paula (born 13.9.1873) in December 1922. Markus Bleicher was already a widower when he moved to Dortmund. Paula and Jenny are designated in the Dortmund address directory for 1926 as pensioners, and Flora as a sales assistant.

In October 1930, the family moved to Stolzestr. 19, where the household began to diminish.
Paula Bleicher died on 20 October 1930.
Markus Bleicher died on 13 December 1931.

However, the three remaining sisters continued to live there, until being forced to relocate to the “Jew house” at Stiftstr. 17 in November 1940. In June of the following year they moved once more, this time to Deusener Str. 128 – an accommodation that was used as an assembly point.

The first deportation “to the East” of Jews from Dortmund was scheduled for 12 December 1941. A list of persons submitted by the Gestapo to Dortmund city administration also included the names of Berta and Flora Bleicher. The planned departure was postponed, however, and only went ahead on 27 January 1942. Under this date, and with an entry stating “deported to Riga, with loss of German citizenship”, the three sisters were deleted from the list of residents at Deusener Str. 128.
This is also the last trace of them.
Also in Riga, no further entries can be found. It must therefore be assumed that the Bleicher sisters already lost their lives in the course of mass killings that were perpetrated in the ghetto in Riga or, after the ghetto was dissolved, at the latest in Kaiserwald concentration camp.